Helen Springs, Northern Territory [cartographic material] : Commonwealth topographic survey /

Provisional ed., rev. Nov. 1960. Topographic map of Helen Springs region, Northern Territory showing classes of roads, railway and telephone lines, mines, post offices, wireless transceivers, windpumps, airports or airfields and landing grounds, horizontal control points, astronomical positions, bores, tanks, wells, waterholes, dams and watercourses. Relief shown by spot heights.; "Horizontal control: Stuart Highway traverse and astronomical determinations by Division of National Mapping".; "Vertical control: Trigonometric and barometric determinations by Division of National Mapping".; "Air photography: Royal Australian Air Force, 1947".; "April 1961".; "Elevations: In feet above mean sea level".; "This provisional edition is distributed at this stage in order that topographic information of some practical value may be available for immediate use".; "Magnetic declination at the centre of this map is 4030' (approx) East of True North".; "NMP/56/41".; Includes index to adjoining sheets and reliability diagram.; Also available online http://nla.gov.au/nla.map-vn5718349.Refer to this map as E53-10 Helen Springs 4 mile topographic seriesRefer to this map as E53-10 Helen Springs four mile topographic serie